'use strict'
const path = require('path')
const defaultSettings = require('./src/settings.js')

function resolve(dir) {
  return path.join(__dirname, dir)
}

const name = defaultSettings.title || 'vue Admin Template' // page title

// If your port is set to 80,
// use administrator privileges to execute the command line.
// For example, Mac: sudo npm run
// You can change the port by the following methods:
// port = 9528 npm run dev OR npm run dev --port = 9528
const port = process.env.port || process.env.npm_config_port || 9528 // dev port

// All configuration item explanations can be find in https://cli.vuejs.org/config/
module.exports = {
  /**
   * You will need to set publicPath if you plan to deploy your site under a sub path,
   * for example GitHub Pages. If you plan to deploy your site to https://foo.github.io/bar/,
   * then publicPath should be set to "/bar/".
   * In most cases please use '/' !!!
   * Detail: https://cli.vuejs.org/config/#publicpath
   */
  publicPath: '/',
  outputDir: 'dist',
  assetsDir: 'static',
  lintOnSave: process.env.NODE_ENV === 'development',
  productionSourceMap: false,
  devServer: {
    port: port,
    open: true,
    overlay: {
      warnings: false,
      errors: true
    },
    // proxy 代理
    proxy: {

      // 配置代理 希望拦截当前的host地址 替换为目标地址
      // 当前的网络请求http://localhost:9528/lejuAdmin/index/login
      // proxy处理成 http://leju.bufan.cloud/lejuAdmin/index/login
      // key: {}   ;  key为拦截的规则,可以是正则表达式
      // key  一般取接口路径的第一个字符 proxy会监听发送的网络请求 当遇到了以lejuAdmin 开头的网络请求 会转发请求
      // 转发到target 域名下
      '/(lejuAdmin|admin)': {
        target: 'http://leju.bufan.cloud', // 8080可以省略不写 所以代理地址和当前项目不是同一个地址!!
        changeOrigin: true // 如果是跨域 需要添加
        // secure: false, // 默认情况下不接收转发到https的服务器上，如果希望支持，可以设置为false
        // http://leju.bufan.cloud/lejuAdmin/index/login
        // ,pathRewrite: {
        //   // ['/xxx']: '/yyy'
        //   '/lejuAdmin':"/api"
        //   // http://leju.bufan.cloud/api/index/login
        // }
      },
      // '/admin': {
      //   target: 'http://leju.bufan.cloud', // 8080可以省略不写 所以代理地址和当前项目不是同一个地址!!
      //   changeOrigin: true // 如果是跨域 需要添加
      //   // secure: false, // 默认情况下不接收转发到https的服务器上，如果希望支持，可以设置为false
      //   // http://leju.bufan.cloud/lejuAdmin/index/login
      //   // ,pathRewrite: {
      //   //   // ['/xxx']: '/yyy'
      //   //   '/lejuAdmin':"/api"
      //   //   // http://leju.bufan.cloud/api/index/login
      //   // }
      // },
      // proxy 和 baseurl 同一时间只能存在一个  设置了baseURL  代理会自动失效
      // 要求大家 用代理的方式获取数据
      '/dat': {
        target: 'https://www.pku.edu.cn', // 8080可以省略不写 所以代理地址和当前项目不是同一个地址!!
        changeOrigin: true // 如果是跨域 需要添加
        // secure: false, // 默认情况下不接收转发到https的服务器上，如果希望支持，可以设置为false
        // http://leju.bufan.cloud/lejuAdmin/index/login
        // ,pathRewrite: {
        //   // ['/xxx']: '/yyy'
        //   '/lejuAdmin':"/api"
        //   // http://leju.bufan.cloud/api/index/login
        // }
      }
    },
    after: require('./mock/mock-server.js')
  },
  configureWebpack: {
    // provide the app's title in webpack's name field, so that
    // it can be accessed in index.html to inject the correct title.
    name: name,
    resolve: {
      alias: {
        '@': resolve('src')
      }
    }
  },
  chainWebpack(config) {
    // it can improve the speed of the first screen, it is recommended to turn on preload
    config.plugin('preload').tap(() => [
      {
        rel: 'preload',
        // to ignore runtime.js
        // https://github.com/vuejs/vue-cli/blob/dev/packages/@vue/cli-service/lib/config/app.js#L171
        fileBlacklist: [/\.map$/, /hot-update\.js$/, /runtime\..*\.js$/],
        include: 'initial'
      }
    ])

    // when there are many pages, it will cause too many meaningless requests
    config.plugins.delete('prefetch')

    // set svg-sprite-loader
    config.module
      .rule('svg')
      .exclude.add(resolve('src/icons'))
      .end()
    config.module
      .rule('icons')
      .test(/\.svg$/)
      .include.add(resolve('src/icons'))
      .end()
      .use('svg-sprite-loader')
      .loader('svg-sprite-loader')
      .options({
        symbolId: 'icon-[name]'
      })
      .end()

    config
      .when(process.env.NODE_ENV !== 'development',
        config => {
          config
            .plugin('ScriptExtHtmlWebpackPlugin')
            .after('html')
            .use('script-ext-html-webpack-plugin', [{
            // `runtime` must same as runtimeChunk name. default is `runtime`
              inline: /runtime\..*\.js$/
            }])
            .end()
          config
            .optimization.splitChunks({
              chunks: 'all',
              cacheGroups: {
                libs: {
                  name: 'chunk-libs',
                  test: /[\\/]node_modules[\\/]/,
                  priority: 10,
                  chunks: 'initial' // only package third parties that are initially dependent
                },
                elementUI: {
                  name: 'chunk-elementUI', // split elementUI into a single package
                  priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
                  test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
                },
                commons: {
                  name: 'chunk-commons',
                  test: resolve('src/components'), // can customize your rules
                  minChunks: 3, //  minimum common number
                  priority: 5,
                  reuseExistingChunk: true
                }
              }
            })
          // https:// webpack.js.org/configuration/optimization/#optimizationruntimechunk
          config.optimization.runtimeChunk('single')
        }
      )
  }
}
